2007 e320 battery light-Fault code 9081 Signal cable 'Terminal 61' has Open circuit
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From: Georgia
silver-w210 1999 E300, white-w210 1999 E300, Black w211 2007 e320 bluetec
2007 e320 battery light-Fault code 9081 Signal cable 'Terminal 61' has Open circuit
I REALIZE THAT THIS IS A DUPLICATE POST, I POSTED THIS YESTERDAY IN WRONG FORUM. I AM TRYING TO HAVE THE OTHER DELETED.
2007 e320
Water got into my from SAM from a car wash and shorted it out. Starter engaged and stayed engaged until starter burned up and then SAM continued to smolder.
Had SAM replaced and starter replaced. Cranks and runs fine, except Battery light symbol comes on after about 10 seconds at start up, and then ac compressor kicks off.
I replaced alternator, thinking the overload/short had fried the regulator.
Battery light still comes on, ac still kicks off.
Pulled up voltage on dash display, 12.3 at start, climbs to 14.2 , then battery light comes on.
I swapped batteries, nothing changes, not a bad battery.
The 07-09 do not have 2 batteries, like the earlier w211's, the only have 1 battery in the trunk.
Replaced battery sensor...still same problem.
Hooked up to das/star ...code in front SAM
Fault code 9081 Signal cable 'Terminal 61' has Open circuit. (Terminal 61 Implausible) This is a current and stored fault.
From what I have read, terminal 61 is the little wire coming off of alternator, for the computer to detect the charging status.
Does that wire connect in the SAM to the B1 connector, pin#2? I tested the wires and they seem to be connected. I cut both ends and stuck in a jumper wire. There is 12-14volts on the wire now, but does not solve problem.
It seems to me that the wire from the alt. goes somewhere else first. Maybe the wire is shorted somewhere.
A funny side note, I had not worked on it for a few weeks, was waiting on my c4 multiplexer to come. I hooked it all up, cleared the few codes in the rear SAM, tried to clear the terminal 61 code in front sam. Disconnected the B1 connector in the front SAM pulled the fuse next to it and inspected it. Put it all back, cranked the car, and the battery sign did not come on, ac continued to work. Sat there and let it idle for 3 or 4 min. Turned it off, cranked again...........problem returned..and persists.
Any ideas would be much appreciated.
2007 e320
Water got into my from SAM from a car wash and shorted it out. Starter engaged and stayed engaged until starter burned up and then SAM continued to smolder.
Had SAM replaced and starter replaced. Cranks and runs fine, except Battery light symbol comes on after about 10 seconds at start up, and then ac compressor kicks off.
I replaced alternator, thinking the overload/short had fried the regulator.
Battery light still comes on, ac still kicks off.
Pulled up voltage on dash display, 12.3 at start, climbs to 14.2 , then battery light comes on.
I swapped batteries, nothing changes, not a bad battery.
The 07-09 do not have 2 batteries, like the earlier w211's, the only have 1 battery in the trunk.
Replaced battery sensor...still same problem.
Hooked up to das/star ...code in front SAM
Fault code 9081 Signal cable 'Terminal 61' has Open circuit. (Terminal 61 Implausible) This is a current and stored fault.
From what I have read, terminal 61 is the little wire coming off of alternator, for the computer to detect the charging status.
Does that wire connect in the SAM to the B1 connector, pin#2? I tested the wires and they seem to be connected. I cut both ends and stuck in a jumper wire. There is 12-14volts on the wire now, but does not solve problem.
It seems to me that the wire from the alt. goes somewhere else first. Maybe the wire is shorted somewhere.
A funny side note, I had not worked on it for a few weeks, was waiting on my c4 multiplexer to come. I hooked it all up, cleared the few codes in the rear SAM, tried to clear the terminal 61 code in front sam. Disconnected the B1 connector in the front SAM pulled the fuse next to it and inspected it. Put it all back, cranked the car, and the battery sign did not come on, ac continued to work. Sat there and let it idle for 3 or 4 min. Turned it off, cranked again...........problem returned..and persists.
Any ideas would be much appreciated.
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Joined: Feb 2018
Posts: 227
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CL500, W212 e350 mega-spec
Did you get anywhere with this? I'm having a similar problem in the sense that multiple systems aren't functioning... although different in that it wasn't triggered by a carwash and the symptom is 'no start' rather than anything scary like a continuously running starter motor.
